| Business | Phone |
| Flander's Engineering Group 2301 Park Ave # 206, Orange Park 32073 | (904) 215-0409 |
| Powell & Hinkle Engineering 1409 Kingsley Ave # 12a, Orange Park 32073 | (904) 264-5570 |
| Wehby Engineering Inc 80 Industrial Loop N # 6a, Orange Park 32073 | (904) 269-4404 |